I have a textbox and a combobox on a toolstrip.  The user enters either an  ID in the textbox or selects a name from the combobox.  When the user  selects a name from the combobox the textbox is filled in automatically by  setting its .Text property equal to the .SelectedValue of the combobox. When the user enters an ID in the textbox the combobox's .SelectedValue is  set to the .Text value in the ID textbox.  All works fine but it is  possible to enter a value in the ID textbox that does not exist in the  combobox.  So I have written a procedure to check for the existence of the  value in the combobox prior to setting the value.  The procedure is shown  below.  My question is: Is it possible to do this without iterating  through the values, i.e. is there a single line of code using something like .Contains that enables me to do the same thing ?


   Private Sub txtCustIDEnter_Leave(ByVal sender As System.Object, ByVal e  As System.EventArgs) Handles txtCustIDEnter.Leave

     Dim strCustID As String = Me.txtCustIDEnter.Text.Trim.ToUpper

     If strCustID.Length <> 0 Then
       For Each drv As DataRowView In Me.cboCustNameSelect.ComboBox.Items
         If drv.Row.Item(0).ToString.ToUpper = strCustID Then
           Me.cboCustNameSelect.ComboBox.SelectedValue = strCustID
           Exit For
         End If
       Next
     End If

   End Sub




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